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</table></div><div></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><strong class="selflink">浮点扩展部分 4 ：补充函数</strong><div class="t-navbar-menu"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=Template:c/experimental/fpext4/navbar_content&amp;action=edit&amp;redlink=1" class="new" title="Template:c/experimental/fpext4/navbar content（页面不存在）">Template:c/experimental/fpext4/navbar content</a><div></div></div></div></div><div class="t-navbar-sep"> </div></div>
<p>C 浮点扩展 - 部分 4 ：补充函数， ISO/IEC TS 18661-4:2015 ，为 C 标准库定义下列新组件，它们为 ISO/IEC/IEEE 60559:2011 （ IEEE-754 的当前版本）所推荐
</p>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>__STDC_IEC_60559_FUNCS__</span></span></div></div>
</td>
<td>   拥有 <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span></span></span> 类型和值 <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">201506L</span></span></span> 的整数常量 <br> <span class="t-mark">(宏常量)</span>
</td></tr>


<tr class="t-dsc-header">
<td colspan="2"> <div>定义于头文件 <code>&lt;math.h&gt;</code> </div>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/exp2m1&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/exp2m1（页面不存在）"> <span class="t-lines"><span>exp2m1 exp2m1f exp2m1l</span><span>exp2m1fN exp2m1fNx</span><span>exp2m1dN exp2m1dNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 <span class="texhtml" style="white-space: nowrap;">2<span class="t-su">x<br></span>-1</span> <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/exp10&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/exp10（页面不存在）"> <span class="t-lines"><span>exp10 exp10f exp10l</span><span>exp10fN exp10fNx</span><span>exp10dN exp10dNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 <span class="texhtml" style="white-space: nowrap;">10<span class="t-su">x<br></span></span> <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/exp10m1&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/exp10m1（页面不存在）"> <span class="t-lines"><span>exp10m1 exp10m1f exp10m1l</span><span>exp10m1fN exp10m1fNx</span><span>exp10m1dN exp10m1dNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 <span class="texhtml" style="white-space: nowrap;">10<span class="t-su">x<br></span>-1</span> <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/logp1&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/logp1（页面不存在）"> <span class="t-lines"><span>logp1 logp1f logp1l</span><span>logp1fN logp1fNx</span><span>logp1dN logp1dNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 ln(1+x) （与 <span class="t-lc"><a href="../numeric/math/log1p.html" title="c/numeric/math/log1p">log1p</a></span> 相同） <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/log2p1&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/log2p1（页面不存在）"> <span class="t-lines"><span>log2p1 log2p1f log2p1l</span><span>log2p1fN log2p1fNx</span><span>log2p1dN log2p1dNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 <span class="texhtml" style="white-space: nowrap;">log<span class="t-su t-su-b"><br>2</span>(1+x)</span> <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/log10p1&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/log10p1（页面不存在）"> <span class="t-lines"><span>log10p1 log10p1f log10p1l</span><span>log10p1fN log10p1fNx</span><span>log10p1dN log10p1dNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 <span class="texhtml" style="white-space: nowrap;">log<span class="t-su t-su-b"><br>10</span>(1+x)</span> <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/rsqrt&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/rsqrt（页面不存在）"> <span class="t-lines"><span>rsqrt rsqrtf rsqrtl</span><span>rsqrtfN rsqrtfNx</span><span>rsqrtdN rsqrtdNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算平方根倒数 <span class="texhtml" style="white-space: nowrap;">x<span class="t-su">-1/2<br></span></span> <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/compoundn&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/compoundn（页面不存在）"> <span class="t-lines"><span>compoundn compoundnf compoundnl</span><span>compoundnfN compoundnfNx</span><span>compoundndN compoundndNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算复利 <span class="texhtml" style="white-space: nowrap;">(1+x)<span class="t-su">n<br></span></span> <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/rootn&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/rootn（页面不存在）"> <span class="t-lines"><span>rootn rootnf rootnl</span><span>rootnfN rootnfNx</span><span>rootndN rootndNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 x 的 n 次方根 <span class="texhtml" style="white-space: nowrap;">x<span class="t-su">1/n<br></span></span> <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/pown&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/pown（页面不存在）"> <span class="t-lines"><span>pown pownf pownl</span><span>pownfN pownfNx</span><span>powndN powndNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 x 的 n 次幂，其中 n 为整数 <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/powr&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/powr（页面不存在）"> <span class="t-lines"><span>powr powrf powrl</span><span>powrfN powrfNx</span><span>powrdN powrdNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 x 的 y 次幂 <span class="texhtml" style="white-space: nowrap;">x<span class="t-su">y<br></span></span> <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/acospi&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/acospi（页面不存在）"> <span class="t-lines"><span>acospi acospif acospil</span><span>acospifN acospifNx</span><span>acospidN acospidNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 arccos(x)/π （以半圆周为单位度量角） <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/asinpi&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/asinpi（页面不存在）"> <span class="t-lines"><span>asinpi asinpif asinpil</span><span>asinpifN asinpifNx</span><span>asinpidN asinpidNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 arcsin(x)/π （以半圆周为单位度量角） <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/atanpi&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/atanpi（页面不存在）"> <span class="t-lines"><span>atanpi atanpif atanpil</span><span>atanpifN atanpifNx</span><span>atanpidN atanpidNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 arctan(x)/π （以半圆周为单位度量角） <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/atan2pi&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/atan2pi（页面不存在）"> <span class="t-lines"><span>atan2pi atan2pif atan2pil</span><span>atan2pifN atan2pifNx</span><span>atan2pidN atan2pidNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 arctan(y/x)/π （以半圆周为单位度量角） <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/cospi&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/cospi（页面不存在）"> <span class="t-lines"><span>cospi cospif cospil</span><span>cospifN cospifNx</span><span>cospidN cospidNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 cos(πx) （以半圆周为单位度量角） <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/sinpi&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/sinpi（页面不存在）"> <span class="t-lines"><span>sinpi sinpif sinpil</span><span>sinpifN sinpifNx</span><span>sinpidN sinpidNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 sin(πx) （以半圆周为单位度量角） <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/tanpi&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/tanpi（页面不存在）"> <span class="t-lines"><span>tanpi tanpif tanpil</span><span>tanpifN tanpifNx</span><span>tanpidN tanpidNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算 tan(πx) （以半圆周为单位度量角） <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/reduc_sum&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/reduc sum（页面不存在）"> <span class="t-lines"><span>reduc_sum reduc_sumf reduc_suml</span><span>reduc_sumfN reduc_sumfNx</span><span>reduc_sumdN reduc_sumdNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算数组的 n 个元素之和 <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/reduc_sumabs&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/reduc sumabs（页面不存在）"> <span class="t-lines"><span>reduc_sumabs reduc_sumabsf reduc_sumabsl</span><span>reduc_sumabsfN reduc_sumabsfNx</span><span>reduc_sumabsdN reduc_sumabsdNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算数组的 n 个元素绝对值之和 <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/reduc_sumsq&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/reduc sumsq（页面不存在）"> <span class="t-lines"><span>reduc_sumsq reduc_sumsqf reduc_sumsql</span><span>reduc_sumsqfN reduc_sumsqfNx</span><span>reduc_sumsqdN reduc_sumsqdNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算数组的 n 个元素的平方和 <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/reduc_sumprod&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/reduc sumprod（页面不存在）"> <span class="t-lines"><span>reduc_sumprod reduc_sumprodf reduc_sumprodl</span><span>reduc_sumprodfN reduc_sumprodfNx</span><span>reduc_sumproddN reduc_sumproddNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算二个数组的各 n 个元素的点积 <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/scaled_prod&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/scaled prod（页面不存在）"> <span class="t-lines"><span>scaled_prod scaled_prodf scaled_prodl</span><span>scaled_prodfN scaled_prodfNx</span><span>scaled_proddN scaled_proddNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算数组 n 个元素的积，结果为有效数位值和大小指数 <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/scaled_prodsum&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/scaled prodsum（页面不存在）"> <span class="t-lines"><span>scaled_prodsum scaled_prodsumf scaled_prodsuml</span><span>scaled_prodsumfN scaled_prodsumfNx</span><span>scaled_prodsumdN scaled_prodsumdNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算二个数组 n 对元素逐对和的积，结果为有效数位值和大小指数 <br> <span class="t-mark">(函数)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="https://zh.cppreference.com/mwiki/index.php?title=c/experimental/fpext4/scaled_proddiff&amp;action=edit&amp;redlink=1" class="new" title="c/experimental/fpext4/scaled proddiff（页面不存在）"> <span class="t-lines"><span>scaled_proddiff scaled_proddifff scaled_proddiffl</span><span>scaled_proddifffN scaled_proddifffNx</span><span>scaled_proddiffdN scaled_proddiffdNx</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  计算二个数组 n 对元素逐对差的积，结果为有效数位值和大小指数 <br> <span class="t-mark">(函数)</span> </td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crexp<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/exp.html" title="c/numeric/math/exp">exp</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crexpm1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/expm1.html" title="c/numeric/math/expm1">expm1</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crexp2<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/exp2.html" title="c/numeric/math/exp2">exp2</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crexp2m1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">exp2m1</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crexp10<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">exp10</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crexp10m1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">exp10m1</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crlog<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/log.html" title="c/numeric/math/log">log</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crlog2<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">log2</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crlog10<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/log10.html" title="c/numeric/math/log10">log10</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crlog1p<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/log1p.html" title="c/numeric/math/log1p">log1p</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crlogp1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">logp1</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crlog2p1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">log2p1</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crlog10p1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">log10p1</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crrsqrt<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">rsqrt</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crcompoundn<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">compoundn</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crrootn<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">rootn</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crpown<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">pown</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crpow<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/pow.html" title="c/numeric/math/pow">pow</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crpowr<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">powr</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crsin<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/sin.html" title="c/numeric/math/sin">sin</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crcos<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/cos.html" title="c/numeric/math/cos">cos</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crtan<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/tan.html" title="c/numeric/math/tan">tan</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crsinpi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">sinpi</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crcospi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">cospi</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crtanpi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">tanpi</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crasinpi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">asinpi</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cracospi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">acospi</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cracospi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">acospi</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cratanpi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">atanpi</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cratan2pi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">atan2pi</span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crasin<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/asin.html" title="c/numeric/math/asin">asin</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cracos<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/acos.html" title="c/numeric/math/acos">acos</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cratan<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/atan.html" title="c/numeric/math/atan">atan</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cratan2<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/atan2.html" title="c/numeric/math/atan2">atan2</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crsinh<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/sinh.html" title="c/numeric/math/sinh">sinh</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crcosh<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/cosh.html" title="c/numeric/math/cosh">cosh</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crtanh<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/tanh.html" title="c/numeric/math/tanh">tanh</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crasinh<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/asinh.html" title="c/numeric/math/asinh">asinh</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cracosh<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/acosh.html" title="c/numeric/math/acosh">acosh</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cratanh<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/atanh.html" title="c/numeric/math/atanh">atanh</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crhypot<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc"><a href="../numeric/math/hypot.html" title="c/numeric/math/hypot">hypot</a></span> 的准确舍入版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc-header">
<td colspan="2"> <div>定义于头文件 <code>&lt;complex.h&gt;</code> </div>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cexp2m1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">exp2m1</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cexp10<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">exp10</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cexp10m1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">exp10m1</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>clogp1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">logp1</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>clog2p1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">log2p1</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>clog10p1<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">log10p1</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crsqrt <span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">rsqrt</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>ccompoundn <span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">compoundn</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>crootn<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">rootn</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cpown <span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">pown</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cpowr<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">powr</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>cacospi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">acospi</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>casinpi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">asinpi</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>catanpi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">atanpi</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>ccospi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">cospi</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>csinpi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">sinpi</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>ctanpi<span class="t-mark">(可选)</span></span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-fpext4-ts t-mark-ts">(FP 扩展4 TS)</span></span></span></div></div>
</td>
<td>  <span class="t-lc">tanpi</span> 的复数版本 <br> <span class="t-mark">(函数)</span>
</td></tr>

</table>
<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">注意</span></h3>
<p>仅若在包含 math.h 前定义宏 <span class="t-c"><span class="mw-geshi c source-c">__STDC_WANT_IEC_60559_FUNCS_EXT__</span></span> ，才声明此扩展添加到 C 库的所有函数。
</p><p>仅若在包含 math.h 前定义宏 <span class="t-c"><span class="mw-geshi c source-c">__STDC_WANT_IEC_60559_DFP_EXT__</span></span> ，才定义每个函数的十进制浮点变体。
</p><p>仅若在包含 math.h 前定义宏 <span class="t-c"><span class="mw-geshi c source-c">__STDC_WANT_IEC_60559_TYPES_EXT__</span></span> ，才定义每个函数的扩展精度变体。
</p><p>所有函数的准确舍入版本（带 <span class="t-c"><span class="mw-geshi c source-c">cr<span class="sy2">-</span></span></span> 前缀者）都是可选的。
</p>
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